import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
Vue.use(VueRouter)

const routes = [
  {path:"/",redirect:"/login"},
  { path:'/login' , component:Login },
  { path:'/home' , component:Home }
]

const router = new VueRouter({
  routes
})
//挂载路由导航守卫
router.beforeEach((to,from,next) => {
  //to 将要访问的路径
//from 代表从哪个路径跳转而来
//next 是一个函数，表示放行
  if(to.path === '/login') return next()
  //获取token
  const tokenstr = window.sessionStorage.getItem('token')
  if(!tokenstr) return next('/login')
  next()
})

export default router
